公开(公告)号：US2111412A

公开(公告)日：1938-03-15

申请号：US40858729

申请日：1929-11-20

Applicant: GEN ELECTRIC

Inventor： ALFRED UNGELENK

IPC: H01J35/30

CPC classification number: H01J35/30 ,  H01J35/305

公开(公告)号：US20180261420A1

公开(公告)日：2018-09-13

申请号：US15912723

申请日：2018-03-06

Applicant: Siemens Healthcare GmbH

Inventor： Florian HOLCH ,  Kai-Uwe TAUBENREUTHER ,  Thomas WEIDINGER

IPC: H01J35/30 ,  H01J35/10 ,  H05G1/52 ,  H01J35/14

CPC classification number: H01J35/305 ,  H01J35/10 ,  H01J35/14 ,  H01J2235/10 ,  H05G1/52

Abstract: An X-ray emitter includes an anode rotatably mounted arranged inside a vacuum housing. It can be set into rotation by an electric drive. In the region of a focal spot, the anode can be exposed to an electron beam emitted by a cathode. According to an embodiment of the invention, a control unit is configured to activate an electromagnetic deflection unit that deflects the electron beam as a function of at least one operating parameter of the electric drive such that a movement of the focal spot, caused by electromagnetic fields of the electric drive, can be at least partly compensated for. An embodiment of the invention further relates to a method for compensating for a focal spot movement when X-ray emitters in operation.

公开(公告)号：US10008359B2

公开(公告)日：2018-06-26

申请号：US14642283

申请日：2015-03-09

Applicant: VAREX IMAGING CORPORATION

Inventor： Bradley D. Canfield ,  Colton B. Woodman

IPC: H01J35/14 ,  H01J35/30 ,  H01J35/06 ,  H01J35/26

CPC classification number: H01J35/14 ,  H01J35/06 ,  H01J35/26 ,  H01J35/305

Abstract: An X-ray tube can include: a cathode including an electron emitter; an anode configured to receive the emitted electrons; a first magnetic quadrupole between the cathode and the anode and having a first quadrupole yoke with four first quadrupole pole projections extending from the first quadrupole yoke and oriented toward a central axis of the first quadrupole yoke and each of the four first quadrupole pole projections having a first quadrupole electromagnetic coil; a second magnetic quadrupole between the first magnetic quadruple and the anode and having a second quadrupole yoke with four second quadrupole pole projections extending from the second quadrupole yoke and oriented toward a central axis of the second quadrupole yoke and each of the four second quadrupole pole projections having a second quadrupole electromagnetic coil; and a magnetic dipole between the cathode and anode and having a dipole yoke with four dipole electromagnetic coils.

公开(公告)号：US09972473B2

公开(公告)日：2018-05-15

申请号：US14768413

申请日：2013-12-03

Applicant: SHIMADZU CORPORATION

Inventor： Tatsuya Yoshizawa

IPC: H01J35/16 ,  H01J35/30

CPC classification number: H01J35/16 ,  H01J35/305 ,  H01J2235/168

Abstract: In an envelope rotation type X-ray tube apparatus, a cathode releases electrons, and the electrons released from the cathode are deflected by deflection coils. A target generates X-rays by being bombarded with the electrons deflected by the deflection coils. Here, a shield ring, while allowing passage through a ring interior of those of the electrons deflected by the deflection coils that head for an area of the target set beforehand, blocks electrons heading outward of the area. Consequently, the electrons are inhibited from bombarding on areas of the target outward of the area and an envelope. This can prevent damage to the envelope.

公开(公告)号：US20150380201A1

公开(公告)日：2015-12-31

申请号：US14768413

申请日：2013-12-03

Applicant: SHIMADZU CORPORATION

Inventor： Tatsuya YOSHIZAWA

IPC: H01J35/16 ,  H01J35/30

CPC classification number: H01J35/16 ,  H01J35/305 ,  H01J2235/168

Abstract: In an envelope rotation type X-ray tube apparatus, a cathode releases electrons, and the electrons released from the cathode are deflected by deflection coils. A target generates X-rays by being bombarded with the electrons deflected by the deflection coils. Here, a shield ring, while allowing passage through a ring interior of those of the electrons deflected by the deflection coils that head for an area of the target set beforehand, blocks electrons heading outward of the area. Consequently, the electrons are inhibited from bombarding on areas of the target outward of the area-F and an envelope. This can prevent damage to the envelope.

Abstract translation: 在包络旋转型X射线管装置中，阴极释放电子，从阴极释放的电子被偏转线圈偏转。 目标通过被偏转线圈偏转的电子轰击而产生X射线。 这里，屏蔽环同时允许通过由偏转线圈偏转的电子的环的内部通过预先设定的目标区域的区域，阻挡向该区域外侧方向的电子。 因此，电子被禁止在区域F外面的区域和信封上的轰击。 这可以防止信封损坏。

公开(公告)号：US20150262782A1

公开(公告)日：2015-09-17

申请号：US14427580

申请日：2012-09-12

Applicant: Takumi Kobayashi ,  Masaaki Ukita

Inventor： Takumi Kobayashi ,  Masaaki Ukita

IPC: H01J35/06 ,  H01J35/16

CPC classification number: H01J35/06 ,  H01J1/16 ,  H01J35/16 ,  H01J35/305

Abstract: This X-ray tube device includes an anode and a cathode including an emitter emitting an electron to the anode. The emitter includes an electron emission portion in a flat plate shape, a pair of terminal portions extending from the electron emission portion, connected to an electrode, and a supporting portion provided separately from the terminal portions, insulated from the electrode, supporting the electron emission portion.

Abstract translation: 该X射线管装置包括阳极和阴极，其包括向阳极发射电子的发射体。 发射极包括平板状的电子发射部分，从电子发射部分延伸的一对端子部分，连接到电极，以及与端子部分分开设置的与电极绝缘的支撑部分的支撑部分，支撑电子发射 一部分。

公开(公告)号：US20150187538A1

公开(公告)日：2015-07-02

申请号：US14660645

申请日：2015-03-17

Applicant: VARIAN MEDICAL SYSTEMS, INC.

Inventor： Bradley D. Canfield ,  Colton B. Woodman

IPC: H01J35/14 ,  H05G1/10

CPC classification number: H01J35/14 ,  H01J35/06 ,  H01J35/30 ,  H01J35/305 ,  H05G1/10 ,  H05G1/52

Abstract: An X-ray tube can include: a cathode including an electron emitter that emits an electron beam; an anode configured to receive the electron beam; a first magnetic quadrupole between the cathode and the anode and having a first yoke with four first pole projections extending from the first yoke and oriented toward a central axis of the first yoke and each of the four first pole projections having a first quadrupole electromagnetic coil; a second magnetic quadrupole between the first magnetic quadrupole and the anode and having a second yoke with four second pole projections extending from the second yoke and oriented toward a central axis of the second yoke and each of the four second pole projections having a second quadrupole electromagnetic coil; and at least one steering coil collocated with a quadrupole on a pole projection.

Abstract translation: X射线管可以包括：包括发射电子束的电子发射体的阴极; 构造成接收电子束的阳极; 阴极和阳极之间的第一磁四极杆，具有第一磁轭，其具有从第一磁轭延伸的四个第一磁极突起，并朝向第一磁轭的中心轴定向，四个第一极突起中的每一个具有第一四极电磁线圈; 在第一磁四极和阳极之间的第二磁四极杆，并具有第二磁轭，其具有从第二磁轭延伸的四个第二极突起，并朝向第二磁轭的中心轴定向，四个第二极突起中的每一个具有第二四极电磁 线圈 并且至少一个操纵线圈与杆突起上的四极杆并置。

公开(公告)号：US20150187537A1

公开(公告)日：2015-07-02

申请号：US14660625

申请日：2015-03-17

Applicant: VARIAN MEDICAL SYSTEMS, INC.

Inventor： Bradley D. Canfield

IPC: H01J35/14 ,  H05G1/10

CPC classification number: H01J35/14 ,  H01J35/06 ,  H01J35/30 ,  H01J35/305 ,  H05G1/10 ,  H05G1/52

Abstract: An X-ray tube comprising: a cathode including an emitter; an anode; a first magnetic quadrupole formed on a first yoke and having a magnetic quadrupole gradient for focusing an electron beam in a first direction and defocusing the beam in a second direction; a second magnetic quadrupole formed on a second yoke and having a magnetic quadrupole gradient for focusing the electron beam in the second direction and defocusing the electron beam in the first direction; wherein a combination of the first and second magnetic quadrupoles provides a net focusing effect in both first and second directions of a focal spot of the electron beam; and a pair of opposing quadrupole electromagnetic coils having alternating current offset being configured to deflect the electron beam in order to shift the focal spot of the electron beam on a target.

Abstract translation: 一种X射线管，包括：包括发射极的阴极; 阳极; 第一磁性四极杆，形成在第一磁轭上，并且具有用于在第一方向上聚焦电子束的磁四极梯度，并且沿第二方向使光束散焦; 第二磁四极形成在第二磁轭上，具有用于在第二方向上聚焦电子束的磁四极梯度并使电子束沿第一方向散焦; 其中所述第一和第二磁四极管的组合在所述电子束的焦斑的第一和第二方向上提供净聚焦效应; 以及具有交流偏移的一对相对的四极电磁线圈被配置为使电子束偏转，以便使靶上的电子束的焦斑移动。

公开(公告)号：US20130216021A1

公开(公告)日：2013-08-22

申请号：US13586073

申请日：2012-08-15

Applicant: Philipp BERNHARDT ,  Martin SPAHN

Inventor： Philipp BERNHARDT ,  Martin SPAHN

IPC: A61B6/02

CPC classification number: A61B6/022 ,  A61B6/4007 ,  A61B6/4208 ,  A61B6/4441 ,  A61B6/486 ,  A61B6/50 ,  A61B6/504 ,  A61B6/542 ,  A61B6/545 ,  G01N2223/414 ,  H01J35/305

Abstract: A method for stereoscopic x-ray imaging by a stereoscopic x-ray tube and by an x-ray radiation detector is provided. The x-ray radiation detector has a buffer. The stereoscopic x-ray tube has two x-ray beam sources disposed a short distance from one another. 2D image datasets are acquired at relatively short intervals one after the other, which have good quality.

Abstract translation: 提供了一种通过立体X射线管和X射线检测器进行立体X射线成像的方法。 x射线辐射检测器具有缓冲器。 立体X射线管具有彼此相距很短距离的两个x射线束源。 以相对较短的间隔一个接一个地获取2D图像数据，其质量好。

公开(公告)号：US20120326031A1

公开(公告)日：2012-12-27

申请号：US13459578

申请日：2012-04-30

Applicant: Uwe WIEDMANN ,  Denis Perrillat-Amede

Inventor： Uwe WIEDMANN ,  Denis Perrillat-Amede

IPC: H01J37/21

CPC classification number: A61B6/482 ,  A61B6/4035 ,  A61B6/405 ,  A61B6/542 ,  G21K1/02 ,  H01J35/10 ,  H01J35/14 ,  H01J35/305 ,  H01J2235/086 ,  H01J2235/166

Abstract: A medical imaging method comprising generating a radiation at a first energy level by a radiation source, generating a radiation at a second energy level different from the first energy level by the radiation source, emitting the generated radiations at an output of the radiation source towards a detector, and blocking or diverting the emitted radiations during at least one intermediate phase during which the radiation source switches in a transient way from one of the first energy level and the second energy level to the other of the first energy level and the second energy level.

Abstract translation: 一种医学成像方法，包括通过辐射源产生处于第一能级的辐射，通过所述辐射源产生不同于所述第一能级的第二能级的辐射，在所述辐射源的输出处朝向 检测器，以及在至少一个中间相位期间阻断或转移所发射的辐射，在该中间相位期间，辐射源以瞬态方式从第一能量级和第二能级之一切换到第一能级和第二能级中的另一级 。